Culvert-mold.



A. BAILEY. GULVERT MOLD. APPLICATION FILED NOV. 20, 191' Patented Apr. 8 1913.

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FFIQE;

ALFRED BAILEY, or AREDALE, IOWA.

CULVERT-MOLD.

t ot-sense.

Specification of Letters Patent.

Patented it pin, limit Application filed Novembc120, 1911. Serial No. 661,219.

To 171 whom it may concern Be it known that l, Amman BAILEY, a

citizen of the United States. residing at Arcdale, in the county of Butler and State of Iowa, have lllVOlli'ttl a new and useful Improvement in (htlvcrt-Molds, of which :the following is a SPOtlfittll'tfifl.

'llleobjcct. of my invention is to improve the constrmztion of molds for cement onlverts; and to provide a simple, inexpensive and eflicient mold, adapted-to be easily and,

quickly collap'sedand removed,"after the culvert has been molded. I

, One feature of my invention consists in the provision of a mold fornn-(l of two cylindrical sections so thatthc mold can be collapsed and removed from citherend afterthe cnlvert is formed.

Another feature which characterizesmy invention, resides lathe provision of means for drawing the walls of the mold in'v'ardly,

or away from the cement formed culvert,

thus greatly facilitating the collapsing and removing of the mold after the culvert is molded, I t v The aboveand other objects and advant-agcs of my invention will become apparent from the detail description of the accompanying drawings, in whichr Figure 1 is a central longitudinal sectional view of one section of my improved collapsihlo culvert mold, Fig, 2 is a transverse sec tional view taken on the line 2-2 of Fig. 1, Fig. 3 is a detail view of a portion of one of the sections, illustrating the means for. drawing the walls inwardly and away from the culvert formed, Fig. 4 is an enlarged detail View of the means for joining the shell portions of the sections together.

My collapsible culvert. mold conisists of two cylindrical sections jllined. together by inserting the contracted end of one section into the tiered end of the adjacent section. I have only shown one section in the draw ings, but since both sections are alike in construction, save for thecontracted and flared end, a detail description of one is sntiicient for both. i

Referring to the drawings in. detail, designates a cylindrical section constructed oi sheet metal (or other suitable material) consisting; of three shell portions Ill, 12 and 13., The shell portion 11 is provided nest its longitudinal edges 16 and 1?, with a series oi openings 14, disposed in olincment, and longitudinal liars said liars being secured on its inner face by rivets or other suitable means. The hers I?) extend past the openings 14 a short distance, as best shown in Fig. i, and are provided with slots 18, 00!!081'H l1(li11g in arrangement with the openings 14, for a purpose presently to be described; The shell portion 12 is novided on. its inner face, near its longitm inal v edges 19 and 20, at intervals wit-h'inwardly projecting loops 21, adapted to pass through the'openings l t. The shell portion 123 is provided on'itsinner {ace near thcylon gitndinal edge with inwardly projecting .loopsll arranged in alinemeat and a d apt ed to pass through the openings 14, in the shell port-ion 11. The shell portion 13 is also provided, near its longitudinal edge 23, with a series of openings 14- disposcd in alincnieiit; and a longitudinal bar 15, said open ingis being adapted to receive the loops 21 on the shcll portio 'i 12. Thehar i5 is so culhd tothe innei'fiace' of the shalt portion 13,: and is provided withslots 18, correspdtnding in arrangement with the openings 14.; The shell portions are joined together by iccys 24, passing through the alined loops.

provide my mold onlthc interior with means for clrawing the walls of the mold in wordly, for the purpose of releasing and diseng'a ing the mold from the cement after the culv rt is formed, which consists of a rod, 28, extending inwardly into'the sections any do sired distance, and provided atits outer and with a handle 29. It is attached at its inner end to the longitudinal edges of the shell portion 11, by means of chains or other similar means, which chains are attached, by any suitable means, at one end to the rod 28,

' and at the other end to the interior surfacethe walls of the mold inwardly and away "from the cement formed culvert; thereby greatly facilitating the collapsing'aiu'l removing of the mold.

I also provide my mold on the interior 1m with hendles 31, to facilitate the regnoiiing of the mold,

It will he noticed that the longitudinal bars 15 extend a short distance past the edge 25, of the openings, and are provided with a series of slots 18, corresponding withthe openings "14,-presenting a longitudinal hearing surface 28, above the edge 25 of the openings 14, for the key 24, thus releasing the loops from a great strain whichthey are subject to, and preventing them from being broken ortorn loose, It will also be noticed that the loops taper inwardly on one side,

presenting an inclined surface 27 (as best shown in Fig. 2) whereby the overlapped portions of the section will readily disengage without binding, when the key is withrawn.

W hile I have herein shownvonly one spe' cific embodiment of my invention, it is to he understood that various changes and alterations -may be resorted to by those skilled in the art, Without departing from the scope of claim.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States, is:

A culvert mold, comprising a cylindrical collapsible section, said section comprising a plurality of shell portions, means for join ing said portions together, said means comprising openings in said port/ions and-dcsigned to receive loops secured to the adjacent; portions, :1 key designed to be inserted through said loops and longitudinal. bars sccured to said portions and so arranged as to present a bearing surface for said key,

In witness whereof, I hereunto suhscribc my name this 11th day of October, A. D., 1911.

. ALFRED BAILEY.

Witnesses:

RALS'LON POTTER, Gno. ILGENFUTZ. 

